1 files changed, 59 insertions, 4 deletions

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index d833ee689f90..c4e4b641d952 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -174,10 +174,12 @@ enum {
 
 /* Debugging */
 #define TPACPI_LOG TPACPI_FILE ": "
-#define TPACPI_ERR         KERN_ERR    TPACPI_LOG
-#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
-#define TPACPI_INFO   KERN_INFO   TPACPI_LOG
-#define TPACPI_DEBUG  KERN_DEBUG  TPACPI_LOG
+#define TPACPI_ALERT    KERN_ALERT  TPACPI_LOG
+#define TPACPI_CRIT     KERN_CRIT   TPACPI_LOG
+#define TPACPI_ERR      KERN_ERR    TPACPI_LOG
+#define TPACPI_NOTICE   KERN_NOTICE TPACPI_LOG
+#define TPACPI_INFO     KERN_INFO   TPACPI_LOG
+#define TPACPI_DEBUG    KERN_DEBUG  TPACPI_LOG
 
 #define TPACPI_DBG_ALL          0xffff
 #define TPACPI_DBG_INIT         0x0001
@@ -2614,6 +2616,15 @@ static bool hotkey_notify_wakeup(const u32 hkey,
                 *ignore_acpi_ev = true;
                 break;
 
+        case 0x2313: /* Battery on critical low level (S3) */
+        case 0x2413: /* Battery on critical low level (S4) */
+                printk(TPACPI_ALERT
+                        "EMERGENCY WAKEUP: battery almost empty\n");
+                /* how to auto-heal: */
+                /* 2313: woke up from S3, go to S4/S5 */
+                /* 2413: woke up from S4, go to S5 */
+                break;
+
         default:
                 return false;
         }
@@ -2659,6 +2670,45 @@ static bool hotkey_notify_usrevent(const u32 hkey,
         }
 }
 
+static bool hotkey_notify_thermal(const u32 hkey,
+                                 bool *send_acpi_ev,
+                                 bool *ignore_acpi_ev)
+{
+        /* 0x6000-0x6FFF: thermal alarms */
+        *send_acpi_ev = true;
+        *ignore_acpi_ev = false;
+
+        switch (hkey) {
+        case 0x6011:
+                printk(TPACPI_CRIT
+                        "THERMAL ALARM: battery is too hot!\n");
+                /* recommended action: warn user through gui */
+                return true;
+        case 0x6012:
+                printk(TPACPI_ALERT
+                        "THERMAL EMERGENCY: battery is extremely hot!\n");
+                /* recommended action: immediate sleep/hibernate */
+                return true;
+        case 0x6021:
+                printk(TPACPI_CRIT
+                        "THERMAL ALARM: "
+                        "a sensor reports something is too hot!\n");
+                /* recommended action: warn user through gui, that */
+                /* some internal component is too hot */
+                return true;
+        case 0x6022:
+                printk(TPACPI_ALERT
+                        "THERMAL EMERGENCY: "
+                        "a sensor reports something is extremely hot!\n");
+                /* recommended action: immediate sleep/hibernate */
+                return true;
+        default:
+                printk(TPACPI_ALERT
+                         "THERMAL ALERT: unknown thermal alarm received\n");
+                return false;
+        }
+}
+
 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 {
         u32 hkey;
@@ -2731,6 +2781,11 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
                         known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
                                                  &ignore_acpi_ev);
                         break;
+                case 6:
+                        /* 0x6000-0x6FFF: thermal alarms */
+                        known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
+                                                 &ignore_acpi_ev);
+                        break;
                 case 7:
                         /* 0x7000-0x7FFF: misc */
                         if (tp_features.hotkey_wlsw && hkey == 0x7000) {